rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Multi-scale vegetation responses to long-term herbivory and weather variation on the Edwards Plateau, Texas
  name:
    name part: Fuhlendorf, Samuel Dean
    name part: 1964-
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 1996
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xiii, 150 leaves : illustrations ; 28 cm.
  abstract: Vegetation dynamics (I 949-1993) of heavy, moderate and ungrazed treatments were analyzed across spatial scales that included (1) the sum of treatments (landscape), (2) treatment units (community), (3) sites (aggregated quadrats) and (4) point sample (individual quadrats). Compositiona lshifts of graminoid species (basal area) were dependent upon grazing intensity. Species response was individualistic, however, three species grazing functional/response groups were identified (short-grass, grazing tolerant; short/mid- grass, opportunistic; mid-grass, grazing sensitive). Within each grazing treatment, dynamics of perennial graminoids were dependent upon local soil depth. Dynamics of composition were driven by grazing intensity, local soil variation and episodic weather events (drought and temperature extremes). Plant density of perennial graminoids increased with grazing, while basal area of individuals decreased. However, total basal area within treatments was highly dependent upon precipitation and not dependent upon grazing intensity treatments. The relationship between basal area and precipitation accentuated grazing influences on compositional shifts by increasing grazing intensity (if pre-drought stocking rate is maintained) during dry years through a reduction in primary production. The strongest relationship with production was a three-year running precipitation average. Over 45 years, graminoid diversity increased when all treatments were considered collectively (landscape level). At the community level (treatments), removal and moderation of grazing resulted in dramatic increases in perennial graininoid diversity. These increases peaked after about 25 years and appear to be decreasing in the ungrazed treatment, reflecting competitive exclusion by dominant mid-grasses and woody plants and supporting the intermediate disturbance hypothesis. Point sample diversity (quadrats) had a weaker relationship with grazing opposite of larger scales. Landscape patterns of…
  note: by Samuel Dean Fuhlendorf.
  note: Vita.
  note: "Major Subject: Rangeland Ecology and Management".
  note: Issued also on microfiche from University Microfilms Inc.
  note: Includes bibliographical references: pages 133-143.
  note: Ph. D. Texas A&M University 1996.
  subject:
    topic: Major rangeland ecology and management
  identifier: 97-01625 UMI
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 970430
    record change date: 20190325093254.0
    record identifier: in00001359943